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Specification model | Hold pipe diameter(in) | Rated load(short tons) | ||||
Drill pipe | casing | Tubing | ||||
DD□-150 | 23/8-51/2 | 41/2-51/2 | 23/8-41/2 | 150 | ||
DD□-250 | 23/8-51/2 | 41/2-51/2 | 23/8-41/2 | 250 | ||
DD□-350 | 23/8-51/2 | 41/2-51/2 | 23/8-41/2 | 350 | ||
















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